Quality Control & Process Improvement Flashcards

A fleet operation tracks 'Mean Time Between Failures' (MTBF) for its vehicles. An increasing MTBF trend over 12 months indicates:

Answer: Reliability is improving as a result of quality maintenance practices

Rising MTBF means vehicles are failing less frequently, which reflects positively on the quality and effectiveness of the maintenance program.

The DMAIC improvement framework is associated with which quality methodology?

Answer: Six Sigma

DMAIC (Define, Measure, Analyze, Improve, Control) is the structured problem-solving roadmap used in Six Sigma projects.

In fleet quality management, a 'nonconformance' is BEST defined as:

Answer: Any output or condition that does not meet a defined requirement or standard

A nonconformance is any instance where a product, service, or process fails to meet specified requirements, triggering corrective action.

Which customer satisfaction metric is MOST useful for gauging overall fleet maintenance service quality from the end user's perspective?

Answer: Net Promoter Score (NPS) or driver satisfaction survey results

Driver satisfaction surveys and NPS directly capture the end-user experience, revealing whether quality improvements are perceived by the people using the fleet.

A fleet shop implements a 'red tag' system where out-of-service vehicles are physically tagged and segregated until repairs are complete and verified. This practice supports:

Answer: Nonconforming product control

Nonconforming product control prevents defective items from being inadvertently returned to service before they meet quality requirements.

In root cause analysis, what distinguishes a 'root cause' from a 'contributing factor'?

Answer: Eliminating the root cause would prevent recurrence; eliminating a contributing factor only reduces likelihood

A true root cause, when eliminated, prevents the problem from recurring; contributing factors increase risk but are not the fundamental source.

Which fleet quality KPI directly measures the financial impact of poor maintenance quality?

Answer: Cost of poor quality (COPQ)

Cost of Poor Quality (COPQ) quantifies expenses from failures, rework, warranty claims, and lost productivity caused by quality deficiencies.